自重湿陷性黄土地区海绵城市建设特点

Construction Characteristics of Sponge City in Dead Load Collapsible Loess Area

庆阳市位于西北地区,降雨少且空间分布不均,水资源缺乏,湿陷性黄土地质导致水土流失严重,生态敏感性高。根据气候特征、土壤地质等天然条件,庆阳市海绵城市建设因地制宜地确定"滞蓄为主,以净促用;适度渗透,有序排放"的技术路线,将海绵城市建设与流域综合治理结合,处理好城-水-沙关系,打造西北湿陷性黄土地区"山水林田湖草"生命共同体。

Qingyang City is located in the northwestern region with little rainfall and uneven spatial distribution, lack of water resources, serious soil erosion caused by collapsible loess geology, and high ecological sensitivity. According to the natural characteristics of climate characteristics and soil geology,the construction of Qingyang sponge city should be based on the local conditions. Its technical route of "maintaining storage, net utilization, moderate penetration and orderly discharge" is determined. The construction of sponge city is combined with the comprehensive reclamation of river basin. The city-water-sand relationship is handled well. A life community of "mountain, water, forest, field, lake and grass" is built in collapsible loess area in northwest China.